Gin-saw filer



M. I. FLOWERS GIN SAW FILER Feb. 17, 1931.

Filed May 9, 1928 4 Sheets-Sheet l mjjwwm Feb. 17, 193i. M. 1'. FLOWERS GIN SAW FILER Filed May 9. 1928 4 Sheets-Sheet 2 mu H r I abtowwqo,

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whxmj Kw um *QS avtozmzgp Feb. '17, 1931. M. l. FLOWERS GIN SAW FILER Filed May 9. 1928 4 Sheets-Sheet 4 I .Hllll Patented Feb. 1 7, 1931 greater MALON I. rnownas, or wAELnEn, 'rnxas GIN-SAW FILER Application; filed my 9, 1928. serial No. 2%,324. 1

The device forming the-subject matter of 'Figure 7 is an elevation showing the forthis application is adapted to be used for sharpening gin saws, undone object of the invention is to provide a machine of theclass described which may be employed for filing ,a round edged tooth on a gin saw through the operation of a rotary file or grinder. Another object of the-inventionis to provide novelmeans for shifting the saw to bring one tooth of the saw, after another, into the field of'operation of the grinder. Thein-vention aims, further to provide a device which will put a somewhat curved-throat between the teeth, as distinguished from. an angular or 1 sharply defined throat; A-further-objectof v the invention is to providera device ofthe class described which will'operate more rapidly than other gin saw filers. The inven tionaims to provide novelmeans for lifting f the rotary grinder, so that-the saw maybe shifted to bring another tooth of the saw operative relation to the grinder.

Itis within the provinceof the disclosure to improve generally and to enhance the util 2'5 ity of devices of that type to which the invention appertains.

into

With the aboveand other objects in view," wwhi ch will appear as the'description pro 'ceeds, the invention resides in -'.the combinal39 tion and arrangement ofparts'and in the dev tails of construction hereinafter described and claimed, it being understood that changes in the precise embodiment of the invention herein disclosed, may be. made within the scope of what is claimed, Without In the accompanying drawings Figure 1 shows, in s de elevat1on,adev1ce departing from the spirit of the invention. i 7

constructed in accordance with the inven Figure 2 is a top plan;

Figure 3 is a fragniental plan vie tratin the means whereby move parted to the slide F'gure 4 's a section detail illustrating certain structural features of the su carry one end of the machinej w illuspports which Figure5 is a longitudinal section;'j I

Figure 6 isa longitudinal sec 7 5 through the pawl rack;

ment is irn tion taken:

wardend'of the machine; Figure 8 is a section taken approximately on the line S -8 of Figure 7; i I

F igure'9'is a section taken approximately on the'line' 99 of Figure 7; i 7

on the line 1O10"of Figure 7;"

wTh'e device forming the subject matter of this application comprises a frame l, which may be constructed in various ways wit-limit departing from the spirit. The'frame 1, as

Figure 10 is a section-taken approximately 7 i I showtn, includes a longitudinal body 2"pro'-' i vided at its rear extremity with'atransverse end member 3,'and SITES forward extremity with'an upstanding transverse end member 4. A means 1s supplied for supporting the 1 forward end of theframe 1*properlyf with respectto thegin saw-10, shown in Figure 7. '1. 1 Having this consideration finmind, elontermediate their ends on; the pivot elements I 6, to swingrvertically, the supports 7 are mounted between the gin saws 10, on the shaft 9 which carrles thegin saws. The rear being adapted to engage the hubs orspacers8 WlllCll V end lTKFigure 1) of themachine may i supported-in {any desired way; Adjusting screws 121are threaded into the rear ends of the supports 7 and bear upon-ledges 14 which i extend outwardly from thesiides orthe body 2 of the main frame '1. Loelr'nutsfl-Sfon-the screws 12 hold the screwsin any position to lengthwise, the lock nuts 15 cooperating with the ledges 14. A connection 16, in'the form which the screwsma-y havebeen adjusted by the pivot elements 6. The rear end of the i r i connection 16 turns freely in the rear 'end of theframe 1 but'is held againstlongltudmal movement therein by spaced shoulders- 17 (Figure 5) .mounted on theconnection 16, a portion of the mam frame work of the machine being located betweenthe shoulders 1? me r . As to the driving mechanism, a gear wheel 20 is journaled on the end member 3 of the frame 1, and is operated in any suitable way, for instance, by means of a handle 21. The

gear wheel 20 meshes with a pinion 22 on a transverse shaft supported for rotation on the end member 3 of the frame. A flywheel 24: is secured to the shaft 23, and on the inner side of the fly wheel there is a bevelled gear Fi 'ure 2 discloses that the bevelled ear 25 21 k3 meshes with a bevelled 13111101126 on a longitudinal shaft 27 journaled in upstanding" slots 33 in the sleeve 30'. A universal joint ea unites the forward end of the connection 31 with ashaft 35. On the forward end of the shaft 35 there is a grindingdisc or file 36, and Figures 8 and 1-0 show that the grinding disc 36 is disposed above across piece 76, extended across the body 20f the frame 1 and provided in its forward edge with a notch or seat 77.

The. numeral37 marks a bearing in which the forward portion of the shaft 35 is journaled; -The bearing 37 is mounted onthe lower endof a shaft 3 disposed approximately at rightangles to the body 2 oftho frame 1. The shaft is journaled for rota tion in the end member 4 of theframe 1, and

the shaft can move in the direction of its length in the end member 4. mounted on the upper end of the frame member 4, and in the housing'39, the upper end 'of a compression spring elO-is held. 1

The lower end of the spring 40 is engaged with the upper end of the longitudinally movable shaft 38, as maybe seen from Figure 8 and the spring 40 tends'to carry the shaft 38, the forward end of the shaft 35, and the grinder 36 downwardly. A means is provided for carrying the shaft 38 and the grind-,6

er 36 upwardly, and this means includes an angular arm 41 which is adjustably secured at 42 to the shaft 38, as showninFigureT A roller 43 is journaled on the arm 41' and is adapted to roll along a. wear plate72 on the frame member at, the wear plate carrying spaced lifting cams e l.

The shaft 38 is rotated, for two purposes:

'First, to swing the grinding disc 36across the edge of the tooth of the gin saw, so asito rounded off the edge of the toothi'fand second,

to cause theroller a3, to ride up on the lifting cams 41 i,- thereby raising the grinding disc 36 so that another tooth onthe gm saw 10 maybe advanced into place to be filed or ground, The means for-rotating the-shaft 38 Ahousing 39 is I as and for thei' purpose described, includes 1 a pitman 47 united by a universal joint (Figure 8) with the arm 41 (Figure 7) on the shaft 38. The universal joint 45 is adjustably connected at 426 to the pitman 47, so that the effective length of the pitman may be varied. For a similar purpose, an adj ustaable connection 48 (Fig. 2) unites the'rear end of the pitman 4:7 with a universal joint 49 connected to a crank block 50 seen best in Fig ure 2. The crank block 50 is connected to a pinion 51, in spaced relation thereto, the crank block having been removed in Figure 3 of the drawings.

The pinion 51 isjournaled at 52 on the part 2 of the main'fraine'of the machine. Rollers 53 (Figure 3) are supported for rotationbe tween thecrank' block 50 and the pinion 51.

' A worm 54; is secured to the shaft 27, between the, bearings 28 for the said shaft, the worm meshing withthepinion 51. Standards 55 and 56 (Fig. 1) are mountedin transverse ly spaced relation (Figure 2) on the body 2 of the frame. Bearings 57 are mounted in the standards 56. V, l

The machine includes a slide, which as a whole, is designated by the numeral 63. The slide '63 comprises parallel rods '58 united at theirrear ends by a cross head 59. The-cross head can be shifted longitudinally of the rods.

58, and nuts on the rods 58 hold the cross head 59. in any position to which it may have been adjusted.v Figure 3 showsthat the roll ers 53 on the pinion 51 ar'eiadapted to engage one'at a time with the cross head 59 of the j slide 63. The rods 58 of the slide 63 are.

2: and 3'. --'A spring means is'prov'ided for carrying the slide j63'inan opposite direction, the said means embodying compression springs 62 on the rods 58. The forward ends of the compression springs 62 engage abut-c ments161'on the rods 58, and the rear ends of the springs bear against the members 57 which supportthcgrods58 slidably inthe standards56. Y

Atransverse shaft 64"(Figures and is" mounted to rock in the forward ends of the rods 58 that form partof the slide 63. The rear ends of links 65 are mounted on'the shaft 64, and the construction is such that the links .65can swing parallel to the gin saws -10 Fig. 1). A cross'rod 66, is held by set screws 73in the forwardends of the links 65.

The links 65 andt-he cross rod 66 may be called a'support, because the rod 66 forms a mounting forfa'pavizl carrier. "67, the carrier 67 being mounted, intermediate-its ends on the" rod 66, as Figure 6 will show. A set screw 68 is; threaded into the/upper portion, -o;f the pawl carrier 67 and is-adapted as engage.-

the cross rod66'to hold thepawlfcarrier 6'? in any position to which'it 'inayhave been tilted uponthe cross rod. Forward pawls 69 and'rear pawls70-are mounted pivotally, a sshown at 7 1, o1ithe pawl carrier 67, for vertical swinging movement, "the pawls being adapted to cooperate with several'of' the gin saws. f .1 As to the general operation of the machine, the shaft35 is rotated,irotation beingimparted to the grinding disc 36, the tooth of the gin saw 10 being ground or" filed accordingly. The shaft 35 can swing transversely, because it is mounted on the-shaft 38 (Figure 8), and the disc 36 oscillates in an are as shown by the arrows a in Figure 10, the result being that V the edge of thetooth of the gin saw is rounded ch" as the tooth is sharpened, The disc 36 can be moved at right angles to its. axis of robrought into place to be ground. lherotatron of the gin saws 10 s brought'about by the frame for rotation, but against longitudinal,

their fulcrafi by the means of the screws 12 change the shape of the tooth accordingly, the exact shape of the tooth belng'a po nt upon which ginners have their own peculiar 'views. i

V tation of the shaft 27. rotation isimparted tothe sleeve 30, by way tation because the shaft38 which carries the P l c bearin a! and the shafton, has-movement in'the direction of its length, Thisopera- 010:; carries the grinding dlsoor file 36 lengthwise of'the edge of the tooth,-1and also raises the disc 36 high enough sothat', at the proper time, the next tooth ofthegin saw can be action of the pan/1 69 70, when the'pawl car rier 6T isreciprocated, The periphery of the sawmovesthrough the notch 77-111 the cross piece 76 (Figures8 and -10) and, thus, the saw is steadied Whilst it isbeing; filed.

V The supports 't'ean be shifted longitudinally by means of the rotatable rod 16 Which 1S threaded zit-19 into the nut 18 connected by" the pivot elements 6'withthe supports the r'od16 being held in the end roernberfl' of the inovenient,'by the shoulders 17 (Figure 5). Moreover, the supports 7 can be tilteden (Figure 1) Because the supports "7 can be shifted-asaforesaid with respect to the frar'neh'the po-' sition of the frame 1. and the position of the filing diso'36, with respect tothe teeth of the gin saw, can be changed, and theoperator can The drives willnow be traced out; i

The gear wheel 20 is rotatedby means of the handle 21, the gearwheel'20 imparting rotation to the shaftr23 by means of the-pim 1 "lion 22. Thefshaft 23 rotates the shaft'27 1 throughthe instrumentality of the bevelled gear 25 and the bevelled pinion 26', the fly wheel 2st promotinga smooth and even ro From the shaft 27,

ofthe universal joint 25), The pin 32 and the slots 33 impart rotation from the sleeve tothe connecting rod 34, the universal oint carrier can at transmitting Tana-i; were shaft35, a the shaft 3,5 rotating the grinding 'disc'36.

,[lVhen the shaft 27 is rotated, the worm 54:, J cooperating wlth the p1n1'on51, causes the crank block 50 to rotate, and since thepitinan l7 1s 'connected bv theuniversal 3o1nt i9 to one end of the crank block 50, thepitrnan moves endwiseandrswi'ngs' the arm 41 off Figure. 7, thereby to rotate or oscillate the shaft38, Whenthe shaft oscillated, the roller 43 rides up and down on the lifting ams 44, I movement-to the shaft 38 and moving the grinding disc 36 in the direction of' the arrows B in Figure 8.

Theweight of the parts attached to the shaft 38 generallymay be regarded as ample to. carry it downwardly, but the spring 10' will do. thi'sin'anyevent. The especial function of the spring 40 is to h'ol'dtheroller 43 down on the wear plate 72 so that therel will be no lost motion at this point'and sothat' the Whe1'r the pinion 51 (Figure-3,)" 1s; rotated by means of the worm 54 onthe shaft 27, th e thereby imparting longitudinal V roller will always be in apositiontocoopen ate properly withthe lifting earns 44:.

rollers 53, onelafter another, engagekthe cross the cross rod -66 movejthepawl barriers 67 to the left in Figureflandthe-ginsaws 10' are head-59 of the slide 63 and retract the'slide, The :slide i's'advanced bythe' springs. 62. dwhen the slide is retracted, the links 65and 7 turned so that anew tooth on the saw l' which'is beingfil'edl, is moved "into the path l of the grindingdisc 36. *VVhi'lst the gin saws otal ly connectedat 64; with-the forward ends of the rods 58 of the slide 63, the pawl carrier 67 has a movementiin a, direction parallel to i the gin-saws10,iand the1pawls on the pawl 'VYhat is; clain1ed.is: V 1, In a device for sharpening gin saw"- I teeth, a rotary sharpener, means for support-- in a in saw in such osition I V v that one edge of'one of its teeth will be "d1 sposed in the path of-the sharpenenniea-ns for" rotating the sharpener about an 15:15, and mechanism tor rounding off said edge, comprising means for swinging the sharpener in an arc trans;

,ver'se torsaid edge and ,rneansfor;simulta neously moving the. sharpener longitudinally of said edge.

' 2; Ina .device'lfor sharpenin in" saw teeth, n1eans.;:for;supporting augin' saw- 111 positien to ground, asharpener, and.

ineans for'inoving-"ithe sharpener in anvflrc cooperate properly with the gin across one edge of the saw tooth that is bei 7 mg sharpened, transversely'of sald edge, and

in -engagement with said edge, thereby to effect a roundingof said edge, and means for moving-the sharpener clearof saidedge as the rounding thereefis completed. 7

3. In a device for sharpening gin saw teeth, a frame, a first shaft mounted in the frame for rocking movement about the axis of the'shaft, and. for longitudinal sliding movement in the direction of its length, a

flexible second shaft journaledon the frame and on the first shaft, a sharpener carried by the second shaft, the first s-haftconstitut axis of the first shaft when the first shaft is rocked, cooperating cams on the'frame, an arm on the first shaft, the arm having means for engaging the'cams to impartlongitudinal movement to the first shaft and to move the sharpener longitudinally of the tooth'which'is being ground, arotary memj ber journaled-onthe frame, means for-operating the rotary member from the second shaft, and'a pitma-n pivoted to the arm, the pitman being pivoted eccentricallyto the rotary'member in such relation to the. rotary member and to' the cams as to'swi'ng the sharpenerin an are about the axis of the first shaft before the cams have operated tomove the sharpener out of engagement with the tooth which is beingground.

4. In a device for sharpening gin saw teeth, a' frame, a shaft mounted in the frame for rocking movement about the axis ofthe shaftand for longitudinal slidingmovement mg means for imparting swinging movement to the sharpener 1n an are about the frame'and on the-shaft for imparting longitudinal movement to the shaft when the shaft is rocked, thereby to move the sharp-- ener longitudina1ly of thetooth Which is MALON I. FLOWERS. v

in the direction of thelength of the shaft, a" i sharpener, means for mounting the. sharpener on the shaft for swinging movement in an: are "about the, axis ofthe shaftfvvhen the shaft is rocked, cooperating cams on the frame, an arm on the shaft, thearm havmg means for engaging the cams tompartlongitudinal movementitolthe shaft and to move the sharpener longitudinally of the V tooth which is being; ground,"a rotary mem ber journal'ed on the frame, and a pitman pivoted to the arm, the pitman being pivoted ,eccentrically to the rotary memberin such relation to the rotary member and to the cams as to swing-the sharp'enerin an arc about the axis of the shaftbefore the cams have operated to move the sharpener out of engagement with the tooth which isbeing ground. a 5. In a device for sharpening'gin saw teeth, a frame, a shaft mounted in the frame for rocking movement about the axis of the shaft and for longitudinal sliding. movement in the direction of thelengthof the shaft, a sharpener, means for mounting the'sharpe'ner on the shaft for swinging movement in an are about the axisof the ShlffWhQIl the shaft is rocked, cooperatingniembers on the lief 

